Volume 4, Issue 5, September 2015, Page: 368-370
Microwave Dielectric Properties of Low-Loss (1-x) Ca0.6Sm0.267TiO3–xSmAlO3 Ceramics
Xu Wang, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China; School of Materials Engineering, Yancheng Institute of Technology, Yancheng, China
Renli Fu, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Yue Xu, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Received: Dec. 3, 2015;       Published: Dec. 3, 2015
DOI: 10.11648/j.ijmsa.20150405.24      View  3256      Downloads  71
Abstract
A novel compositions in the (1-x) Ca0.6Sm0.267TiO3–xSmAlO3 system were prepared via conventional mixed oxide route in order to modify the postive temperarure coefficient of resonnant frequency(ôf) of Ca0.6Sm0.267TiO3.The microwave dielectric properties and phase composition of this system ceramics were investigated. X-ray powder diffraction results showed that Ca0.6Sm0.267TiO3 and SmAlO3 formed a solid solution when 0.05≤x≤0.20. Microstructures of the sintered ceramics were observed by SEM; dielectric properties of the samples were also measured. The ôf values showed a near linear decrease with increasing additions of SmAlO3. A dielectric constant of 53.1, Qf value of 24,085GHz and ôf value of +13.3ppm/°C were obtained for 0.80 Ca0.6Sm0.267TiO3–0.20 SmAlO3 ceramics sintered at 1450°C for 4h.
Keywords
Dielectric Ceramic, High Dielectric Constant, Zero Temperature Coefficient, Low Loss
To cite this article
Xu Wang, Renli Fu, Yue Xu, Microwave Dielectric Properties of Low-Loss (1-x) Ca0.6Sm0.267TiO3–xSmAlO3 Ceramics, International Journal of Materials Science and Applications. Vol. 4, No. 5, 2015, pp. 368-370. doi: 10.11648/j.ijmsa.20150405.24
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